/*
W3C Sample Code Library libwww SGML Parser
!
SGML Parser
!
*/
/*
** (c) COPYRIGHT MIT 1995.
** Please first read the full copyright statement in the file COPYRIGH.
*/
/*
The SGML parser is a state machine. It is called for every character of the
input stream. The DTD data structure contains pointers to functions which
are called to implement the actual effect of the text read. When these functions
are called, the attribute structures pointed to by the DTD are valid, and
the function is parsed a pointer to the curent tag structure, and an "element
stack" which represents the state of nesting within SGML elements. See also
the the generic Stream definition
The following aspects are from Dan Connolly's suggestions: Binary search,
Strcutured object scheme basically, SGML content enum type.
This module is implemented by SGML.c, and it is a part
of the W3C Sample Code Library.
*/
#ifndef SGML_H
#define SGML_H
#include "HTStream.h"
#include "HTStruct.h"
/*
.
SGML Content Types
.
*/
typedef enum _SGMLContent{
SGML_EMPTY, /* no content */
SGML_LITERAL, /* character data. Recognized exact close tag only.
Old www server compatibility only! Not SGML */
SGML_CDATA, /* character data. recognize only */
SGML_RCDATA, /* replaceable character data. recognize and &ref; */
SGML_MIXED, /* elements and parsed character data. recognize all markup */
SGML_ELEMENT /* any data found will be returned as an error*/
} SGMLContent;
/*
.
Attribute Types
.
Describes the SGML tag attribute
*/
typedef struct _HTAttr {
char * name; /* The (constant) name of the attribute */
/* Could put type info in here */
} HTAttr;
extern char * HTAttr_name (HTAttr * attr);
/*
.
Tag Structure Describing SGML Elements
.
name
is the string which comes after the tag opener "